Anthracene oil hydrogenation method

A technology for hydrocracking of anthracene oil, which is applied in the field of hydrogenation of anthracene oil to produce light fuel oil, can solve the problems of limiting the application of anthracene oil hydrocracking technology, high requirements for hydrocracking catalysts, and affecting the service life of catalysts, etc., reaching The effect of safe and stable operation, saving equipment investment and increasing load

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two methods use anthracene oil as the raw material, a large amount of heat will be released during the hydrofining process, and there are problems such as large temperature rise of the device and unstable operation, and it is easy to cause coking of the catalyst, which affects the service life of the catalyst.
Moreover, the nitrogen content in the resulting refined oil is less than 400 μg / g, which requires the selection of a hydrocracking catalyst with strong nitrogen tolerance, which not only has high requirements for the hydrocracking catalyst, but also limits the application of the anthracene oil hydrocracking process

Method used

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Examples

Experimental program
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Effect test

Embodiment 1～3

[0038] The properties of the anthracene oil raw materials used are shown in Table 1.

[0039] A two-stage hydrocracking process is adopted, and the specific operation process is shown in figure 1 .

[0040] Preparation of hydrocracking catalysts containing amorphous silica-alumina and Y zeolite: A1, A2.

[0041] Hydrocracking catalyst A1:

[0042] Amorphous silicon aluminum (specific surface 520m 2 / g, SiO 2 35wt%, pore volume 1.2ml / g) and Y molecular sieve (SiO 2 / Al 2 o 3 9, unit cell constant 2.432, specific surface 650m 2 / g, infrared acidity 0.45mmol / g), after mixing, add the adhesive (prepared by peptizing small-pore alumina with a pore volume of 0.42ml / g and dilute nitric acid) and roll it into a ball, then put it into the extruder After extruding, dry at 110°C for 10 hours, activate at 500°C for 4 hours to prepare the carrier, then impregnate with Mo-Ni co-impregnation solution, then dry at 110°C for 12 hours, and activate at 500°C for 3 hours. The final comp...

Embodiment 1

[0050] Examples 1-3 The liquid phase product obtained after the hydrofinishing oil passes through the separation system is recycled back to the hydrofinishing reaction zone and mixed with anthracene oil. The circulation weight ratio of Examples 1 and 2 is 3.0, and the circulation of Example 3 The weight ratio is 5.0.

[0051] Table 1 Raw Oil Properties

[0052] crude oil name

[0053] Table 2 Hydrogenation process conditions and properties of diesel fraction products

[0054] Program

[0055] Nitrogen content / μg·g -1

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Abstract

The invention discloses an anthracene oil hydrogenation method. The method comprises the following steps of: hydrogenating and refining anthracene oil, and then carrying out gas and liquid separation through a hot high-pressure separator and a hot low-pressure separator, wherein obtained hot low-fraction oil is partially circulated back to a hydrogenating and refining reaction region to be mixed with the anthracene oil, and residual partial hot low-fraction oil is led to a hydrogenating and cracking reaction region; leading a hydrogenating and cracking product and gas separated from the hot high-pressure separator enter a cold high-pressure separator, and leading separated liquid and gas separated from the hot low-pressure separator enter a cold low-pressure separator; and carrying out steam stripping on separated liquid and then leading the liquid to a fractionating column to obtain gasoline and diesel oil fractions. The method is favorable for reducing the temperature rise of the device, reducing the equipment investment and improving the operation safety and stability of the device, and meanwhile, because the concentrations of colloid and asphalt in raw materials are reduced, the running period of the device can be prolonged.

Description

technical field [0001] The invention relates to a method for hydrogenating anthracene oil, in particular to a method for hydrogenating anthracene oil to produce light fuel oil. Background technique [0002] The increasing scarcity of the world's petroleum resources has made the technology of processing various unconventional petroleum resources to produce light fuel oil a hot topic, one of which is to use coal as raw material to produce clean fuel. [0003] Anthracene oil is one of the fractions obtained by distillation of high-temperature coal tar. Its initial boiling point is 220-260°C, and its final boiling point is 500-550°C. It has a relatively heavy distillation range and belongs to the heavy fraction range. Anthracene oil is mainly a mixture of compounds such as anthracene, phenanthrene, carbazole, and acenaphthene, mostly aromatic hydrocarbons with three rings and four rings or more, and the density (20°C) is greater than 1.0g / m 3 , and the impurity content is high,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12
Inventor 关明华许杰王立言
Owner CHINA PETROLEUM & CHEM CORP
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